Re: What is your opinion about unsigned int u = -2 ?

Am 01.08.2024 um 08:34 schrieb Blue-Maned_Hawk:

Thiago Adams wrote:
 

What is your opinion about this:
>
unsigned int u1 = -1;
>
Generally -1 is used to get the maximum value.
Is this guaranteed to work?

 Whether or not it is, i would prefer to use the UINT_MAX macro to make the
code clearer.
 

How about this one?
>
unsigned int u2 = -2;
Does it makes sense? Maybe a warning here?

 I cannot think of any situations where that would make sense, but i also
cannot guarantee that there are not any.

With ...
u &= -2;
... you reset the lowest bit.
Similar with ...
u &= -256;
... you reset the lowest eight bits.